[Bug tree-optimization/68097] We should track ranges for floating-point values too

[cvs-commit at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68097

--- Comment #9 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Aldy Hernandez <al...@gcc.gnu.org>:

https://gcc.gnu.org/g:10d6109fe183d984a0377a7afe2854a0d794ebeb

commit r13-2741-g10d6109fe183d984a0377a7afe2854a0d794ebeb
Author: Aldy Hernandez <al...@redhat.com>
Date:   Mon Sep 19 09:59:01 2022 +0200

    frange::set_nonnegative should not contain -NAN.

    A specifically nonnegative range should not contain -NAN, otherwise
    signbit_p() would return false, because we'd be unsure of the sign.

            PR 68097/tree-optimization

    gcc/ChangeLog:

            * value-range.cc (frange::set_nonnegative): Set +NAN.
            (range_tests_signed_zeros): New test.
            * value-range.h (frange::update_nan): New overload to set NAN sign.